Everyday Science MCQs

5120 MCQs  (Page 323 of 512)

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The geometry of ammonia is___________________?
A. Tetrahedral
B. Square planner
C. Trigonal bipyramidal
D. Trigonal pyramidal
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By combining n atmic orbitals no. of hybrid orbitals will be__________________?
A. 2n
B. N
C. 3n
D. Impossible to predict
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Geometry of simple molecule having sp3 hybrid orbital is ___________________?
A. Triangular
B. Tetrahedral
C. Square planner
D. Linear
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Pi bonds are produced by overlapping of__________________?
A. Un-hybrid orbitals
B. Hybrid orbitals
C. Hybrid and un hybrid orbitals
D. Atomic orbital and hybrid orbital
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Measurement of the degree of polarity is___________________?
A. Electron affinity
B. Ionic character
C. Ionization energy
D. Dipole moment
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A specie with maximum number of unpaired electrons ?
A. F
B. H2o
C. Hf
D. Nh-2
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Force responsible to hold atoms together in a compound is called ________________?
A. Bond
B. Attractive force
C. Interaction
D. All of above represent same entity
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In a period the atomic radius ?
A. Increases
B. Decreases
C. Remain same
D. First decreases then increases
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Energy required to remove electron from an atom______________?
A. Ionization potential
B. Electronegativity
C. Electron affinity
D. Activation energy
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Greater shielding effect corresponds to ionization energy value___________________?
A. Greater
B. Lesser
C. Remain same
D. No effect
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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